Usually no. A US remote-online-notarization (RON) platform such as Notarize or Proof produces a notarial act from a notary commissioned in a US state. If your Japan GK (合同会社) incorporation calls for a home-country notary instead, such as a Singapore notary because the signatory or the company is Singaporean, the US platform's certificate does not satisfy that requirement, no matter how the signing was performed.
Why Doesn't a US RON Platform Work for a Non-US Founder's Affidavit?#
Because the Japanese Legal Affairs Bureau (法務局) accepts a defined set of authenticators for the representative-member affidavit, and a US-commissioned notary is not one of them when the signatory or the member company sits in a different country. The accepted routes are a notary commissioned in the signatory's home jurisdiction, that country's consul, or that country's consul stationed in Japan. A Notarize or Proof certificate carries a US notary's seal regardless of where the signer was physically sitting during the video call, so it answers the wrong question: it proves a US notary witnessed the act, not that the act meets the home-jurisdiction requirement the 法務局 is actually checking for.
The trap catches founders because RON platforms market themselves as a universal substitute for an in-person notary, and for US domestic use that is often true. It stops being true the moment the receiving authority is outside the United States and specifies whose notary it will accept. Most US states also have no apostille process for an electronically notarized document, so even attaching an apostille afterward does not necessarily fix the defect, and some receiving authorities reject RON-notarized documents even when one is attached.
What Actually Determines Whether a Remote Notarization Is Accepted?#
The jurisdiction of the notary's commission, not whether the signing happened by video or in person. A notary commissioned in Singapore has authority under Singapore law; a notary commissioned in Ohio has authority under Ohio law. Japan's registration practice for the GK representative-member affidavit cares which law granted the notary their seal, because that is what lets the apostille, or the home-country consul, certify the act as genuine on the other end.
This is the same principle covered in the broader signature certificate and corporate affidavit guide: the document format matters less than whether the authenticator issuing it is one the 法務局 recognizes for that signatory's jurisdiction. A founder who gets this backwards has treated "notarized" as a single global category, when it is a jurisdiction-specific act, and remote delivery does not change which jurisdiction issued it.
What Does a Working Remote Route Look Like? (Singapore Example)#
It looks like a notary actually commissioned in the signatory's home country, witnessing the signing by live video under that country's own rules, followed by that country's own apostille authority. Singapore is the documented example: a legislative amendment allows a Singapore notary to witness an affidavit by live video rather than requiring physical presence, and the resulting notarized affidavit is then apostilled by the Singapore Academy of Law (SAL) through its online legalisation portal. Singapore acceded to the Hague Apostille Convention in 2021, Japan is also a party to the convention, so the apostille issued by SAL is accepted for use in Japan without further legalization.
The practical sequence for a Singapore-based founder or the authorized signatory of a Singapore corporate member: sign the affidavit on a video call with the Singapore notary, the notary completes the notarial certificate, then the notary's firm submits it to SAL for the apostille since they are physically in Singapore. The remote signer never has to travel to Singapore or to Japan for this step. The same logic applies if the GK structure instead routes through a 支配人 (shihainin) registered manager rather than a corporate 代表社員, since the underlying affidavit and notary-jurisdiction rule does not change with the appointed role.
How Long Does the Singapore Notary-Plus-Apostille Route Take?#
Plan on roughly one to two days for the notarial certificate after the video signing, then roughly the same or next business day at the SAL counter for the apostille, or two to three days if submitted online. These figures come from the notary providers and SAL's own stated processing, so they move with each firm's queue and are not a committed turnaround. One distinction worth flagging separately: Singapore's e-Apostille, which can issue within minutes, currently covers only ACRA-issued public documents such as the Business Profile or Register of Directors, not a privately notarized affidavit, so do not expect the instant timeline to apply to the affidavit itself.
Before relying on a remotely witnessed and apostilled affidavit for a live filing, confirm with the retained 司法書士 (judicial scrivener) that the specific 法務局 handling the GK registration will accept it, and whether an apostille is required for that jurisdiction or home-country notarization alone is sufficient. This is a procedural detail that shifts with the receiving bureau and the signatory's country, which is why the non-resident incorporation guide treats it as a per-filing check in the incorporation checklist, not a settled fact.
(a) A US RON platform's certificate satisfies a US-notary requirement, not a home-country-notary requirement for a non-US signatory. (b) The notary's commission jurisdiction, not the remote or in-person format of the signing, is what the 法務局 checks. (c) Where the home jurisdiction has an equivalent to Singapore's video-witnessed affidavit, that notary plus that country's own apostille authority is the working substitute for an in-person trip. (d) Day-count estimates for notarization and apostille are provider-stated and queue-dependent, and should be confirmed with the retained 司法書士 before a filing deadline is set around them.
Founders from jurisdictions other than Singapore should not assume their home country has an equivalent remote or video-witnessing option for notaries; some do and some still require physical presence for an affidavit. Confirming this with Aplash or local counsel before booking a US RON session catches an unusable certificate before it is booked, not after.
Frequently Asked Questions#
My company is Singaporean but I'm signing from the US. Can I still use a US notary?
No. What matters for the affidavit requirement is the company's and signatory's jurisdiction, regardless of where the person signing happens to be sitting during the call. A Singapore corporate 代表社員's affidavit needs a notary commissioned in Singapore, or Singapore's consul, even where the signer is physically overseas for the video session.
If my US RON document already has an apostille attached, does that fix the problem?
Not reliably. Most US states have no apostille process specifically for electronically notarized documents, and even where one exists, some receiving 法務局 offices reject a RON-based document because the underlying notarial act still came from the wrong jurisdiction. The apostille authenticates the notary's seal; it does not change which country's notary issued it.
Is there a way to avoid the home-country notary step?
Sometimes. If the signatory can appear in person at that country's consulate in Japan, the consul stationed in Japan can act as the authenticator directly, which is a domestic consular act filed with the 法務局 and usually needs no apostille. This substitutes presence in Japan for presence in the home country, so it trades one kind of travel for another, and should be confirmed with the specific embassy and the retained 司法書士 before relying on it.
This article is informational only and does not constitute legal, tax, or regulatory advice. Consult a qualified advisor before acting on the content. Last updated: November 2026.